Perspective correction

Hi,
I know that LR does not have perspective correction and that it has been requested as a feature, but in the meantime I would like to know what people recommend for such correction.
I have Photoshop Elements v4.0 for Mac which I can use to host a plugin, but if people think a standalone program is better then I could use that.
Looking forward to your suggestions.
Andrew.
Mac mini 2GB RAM, Mac OSX 10.4.10, PSE v4.0 and LR1.1

Check out
DxO. If you know what you are doing, you can try the free
Hugin or the (not so free) lens correction tool in photoshop.

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PSE 8 and ACR 6.1 perspective correction?

After reading about the perspective correction that is supposed to be available in ACR 6.1, I downloaded it and installed it into PSE 8 (Windows 7 64bit). Installation seemed to work. It does say 6.1 when I open Camera Raw. However, I don't see any of the cool new features like lens correction, or
perspective correction. Do they not work with Elements 8?

PSE has limited access to many of the ACR adjustments. The ACR you have with PSE8 will actually perform the adjustments if they are in the sidecar or embedded in the image, but only Photoshop or Lightroom have the user-interface to specify those adjustments and place them in the sidecar or embed them in the image metadata.

Perspective correction and Lens distortion removal tools

Hi,
as a photographer who aspires to create pictures with best possible quality available to me I am very bothered that my primary image editing tool is lacking Perspective correction and Lens distortion removal tools. I believe that there should be no questions if such tools are necessity or so to speak additional enhancements. It is eating the disk space as well having multiple copies clutters the projects if these functions are available only via plug-ins or additional external tools.
How are you guys handling such issues?
For a moment I was thinking to convert all the files through Nikon Capture NX2 before importing to Aperture but that again is counter effective in long run. Aperture is built to work with Raw files and large tif files take longer to process between various programs and I would loose all the benefits of having Raw file at all.

It would be nice to have those functions added to the next version.
I always use the following page to select the product I want to provide feedback on:
http://www.apple.com/feedback/
Note - due to the number of lenses and cameras, this would be a huge task and the end result may not include a lot of older lenses which really need the correction.
I use PT Lens as a plug-in inside of Aperture for the most part (although I do have PS CS5 and DxO Pro 6 for situations where I want something different).
As you said, the downside is that you end up with a TIFF (from inside Aperture) or a processed file needing to be import into Aperture.

I want to ask about changing perspective and perspective correction in photoshop. Obviously, we can tilt and straighten buildings and other monuments, which are leaning in any direction. Now, what I want to know is whether we can change perspective for hu

I want to ask about changing perspective and perspective correction in photoshop. Obviously, we can tilt and straighten buildings and other monuments, which are leaning in any direction. Now, what I want to know is whether we can change perspective for human faces. For example, if there is a human face, where one part of the face is facing the camera and the other part of the face is only partially facing the camera, can we make this face look totally at the camera? I mean, look straight in front, and I am talking about the whole face here. I am attaching an image as an example of what I am talking about. @

If you are wondering why you are not getting any responses, it is because you have vented a complaint without any details that make any sense or give anyone something to work on.
If you want help, I suggest actually detailing what has happened, with versions of software etc. Anything that would let us assist.
As a start I am guessing that you have not really got the hang of "How it all works". Firstly download the Pages09_UserGuide.pdf from under the Help menu. Read that and view the Video Tutorials in the same place. A good addition would be the iWork 09 Missing manual book and something to help you learn how to use your Mac.
If there are specific tasks you need help with:
http://www.freeforum101.com/iworktipsntrick/index.php?mforum=iworktipsntrick
Is a good resource.
Peter

Perspective correction app recommendations?

Can anyone recommend a perspective correction app? Preferably one that works well with iPhoto?
There is DxO Perspective and CorrectPerspective on the App Store, both with very little or no reviews.
Thanks,
Rob.

That is one i'd love to have!

Perspective correction and scaling in y direction only

Nach einer starken vertikalen Perspektivkorrektur werden Gebaeude "zu hoch".
Wie skaliere ich das Bild nur in y-Richtung ?
After applying vertical perspective correction for tall buildings, the buildings get "too tall".
How do I down-scale the vertical extent of the "corrected" image ? (no global scaling) ?

That is not possible in Lr, only in Photoshop CSxx.
Also, in Photoshop CSxx you can extend the canvas at the top, so that he top of the building does not go beyond the image top margin.

I need effective perspective correction.

I I take architectural in Sony's .SR2 Raw format. One of my photos does not seem to be correctable in LR 3 - there are no horizontals.
I think it needs a 'Force parallel' plugin such in DxO Optics and the Altostorm one I use in CS2. Any suggestions?

So how good are LR's perspective controls at correcting both vertical and horizontal perspective? The below image is the original 17mm image corrected using LRs controls, Vertical +20, Horizontal +27, Rotate +.3, and Scale 87. The second image was shot at a much further distance using 40mm focal length with no LR perspective correction. Interestingly I obtained the best results (i.e. closest match to the 40mm image) using NO lens distortion correction. With Lens Distortion correction applied in the 17mm image, elongation is increased and the roof to the right slanted downward when all other lines were parallel. From past experience I have found most images shot at extreme wide angle look more natural without applying lens distortion correction (i.e. barrel distortion), for this very reason. I rarely use it and leave the default at 0% for all my lenses. I only apply it on images with visible distortion, which are very few.
17mm with LR corrections
40mm with NO LR corrections
The LR corrected 17mm image is virtually identical to the flat perspective 40mm image. Their is of course visible elongation in the light at the upper left and other areas of the 17mm image, but you're not going to be able to change that with PC2 or C1 either! If you would like to try the below picture is a fully uncorrected image exported outof LR with the same size and settings as the above pictures:
Original 17mm image LR Export without corrections

Perspective correction via crop tool.

I have always used the crop tool to correct skewed lines, both vertically and horizontally. Not sure how to do it in the new Beta Version.

Perspective Crop is now its own tool. It is just under the Crop Tool stack.

What's the best plugin for wide-angle / perspective correction

Hi guys,
I do a lot of location photography with a wide angle lens. When shooting upwards it sends the top of the building into the distance. My workflow has been to export to Photoshop for these and use the 'Transform' tools to add a little correction.
Do any of you use an aperture plugin for this and if so, would you recommend one to me?
Thanks for your help.
Richard

Well, unfortunately Flash was the universal format, and then Steve Jobs decided that he did not like Adobe. As most browsers on Earth were FLV playback enabled and if not, were only a quick, free download away. Now, it seems that Apple's devices will only work with flavors of MOV. One can still download and install Apple's QT Player (though several recent versions did not work well with Adobe programs - Steve Jobs sabotage?).
Instead of coming together on universal formats/CODEC's, it seems that many wish to fragment the market to support just their products. One is at the mercy of these hardware and software companies. Producers probably should now do several versions of everything, if they wish to cover all bases. Someone will have to download and install something.
Good luck,
Hunt

Smart object in PS: what if you crop or do perspective correction afterwards

Let's say I open a LR smart object in PS, and do some stuff in PS in layers.
Then, I crop or rotatate or fix distortion in the RAW image in LR. What happens to the PS layers, which no longer match the size or orientation of the smart object?

When a file is passed from Lightroom to Photoshop as a Smart Object, there is no live link. From then on, changes to either instance won't affect the other.
You can make it happen manually, though.
First you save the Lightroom changes from the Lightroom database back out to the original file, by selecting the image in Lightroom and pressing Command-S/Ctrl-S (the shortcut for the Save Metadata To File command, which is under the Metadata menu in the Library module and under the Settings menu in the Develop module). If the image is a DNG, the edit metadata is written into the DNG. If the image is raw, the edits are written into the XMP metadata sidecar.
Next, in Photoshop, you select the Smart Object in the Layers panel and choose Layer > Smart Objects > Replace Contents. Then select the original file and import it again. This is sort of like updating a link. To save time finding the original file, from Lightroom you can right-click the image and choose Reveal in Finder/Reveal in Explorer, then drag it into the Place dialog in Photoshop that comes up when you Replace Contents. Once you get through all that, the Photoshop instance is updated because it re-reads the updated edit metadata you saved out of Lightroom, and applies it.
If in Lightroom you cropped, rotated, or distorted the image, it may be necessary in Photoshop to choose Image > Reveal All to automatically expand to the new dimensions or Image > Trim to delete extra space that resulted from the update.
It's a very tedious and time-consuming series of steps, but it can be done if you need it.

Lightroom 5 - Correcting Perspective using Upright | What's New in Lightroom 5 | Adobe TV

Discover how to automatically fix common problems such as tilted horizons as well as converging verticals in buildings using Lightroom’s Upright controls for perspective correction.
http://adobe.ly/15BCfQo

Hi, Thanks for the great video.
I'm having a problem -- when trying to sync Upright Auto across several images it appears to be pasting the transform instead of the auto correction. I set it exactly per the video, yet I still need to hit the "Reanalyze" button for each image -- which sort of defeats the purpose of the sync. I have the same problem if I use "Upright" in a custom preset.
Is this a program bug? Or is there something I can change about the way I'm doing things?
Thanks for any help you can provide.

Perspective/lens distortion correction

About the only thing I ever have to go out of LR2 to do is correct for perspective or for lens distortions (esp. on wide angle lenses). I know this might not be an easy thing to fit in the interface, but it'd be very useful. Especially if you can set it up to do a stored lens distortion correction for a given lens at a given focal lens (+ maybe focus distance).
-Lars

I hope y'all don't mind if I think aloud a little more here.
We've been talking about perspective correction and lens distortion correction as if they were just about the same. They aren't.
Lens distortion correction is a fairly complex warp, but one that is completely determined by the lens and focal length (please corect me if I'm wrong). The main use of it would be to correct for the lens defects, not to create an artistic effect (like CA repair). It could therefore very reasonably be done as a preparation step, as with the Olympus cameras that actually store some correction information. It would be of relatively low user value to be able to change it later, and it would be much harder to implement.
Perspective correction is most definitely a user-driven correction. Not only does LR not stand a chance of figuring out what to do automatically, there would also be many cases where you'd want to correct in one dimension but not another, correct somewhat less that 100%, or in other ways fiddle with the amount of correction. Fortunately, it is a much simpler correction, merely the application of a small transformative matrix. Unlike lens distortion correction, it doesn't turn circles into strange wobbly shapes, but merely into ovals.
Let's take a look at the local adjustments: Crop, rotate, red-eye, spot removal, graduated filter and adjustment brush.
Crop would be well-nigh impossible to mix in with lens distortion correction, another reason to have the correction applied first. With regards to perspective, it should behave more or less like it does towards rotation.
Rotation can actually be done internally using the same operations that perspective correction would, but should probably still be separate in the interface.
Red-eye and spot removal both operate on horizontal-vertical ovals (restricted ovals for spot removal). These would be awful with user-adjusted lens distortion correction, even more reason to have that be an initial step. Perspective correction would stretch them somewhat. What happens when the user makes a dust spot fix, then fixes the perspective, then attempts to adjust the dust spot fix? We end up with the same situation as with vignetting: That there are pre- and post-crop versions. This distinction would now have to extend to pre- and post- crop+rotate+perspective adjustments. Obviously, you'd also want to be able to spot remove based on the corrected image, and it'd be strange to have a tool that's bent. It may be necessary to separate out dust spot removal from "subject matter removal" (including red-eye), as dust spotting should always be before perspective correction.
Graduated filter was really the thing that convinced me that the two corrections need to be split. Applying lens distortion correction after graduated filter would lead to a bent 'horizon line', a very bad thing indeed. Fortunately, it would be fairly resistant to perspective correction, though not entirely: If the horizon does not follow the perspective correction axis, the outer lines ought to tilt together. Probably overkill, though.
We already have an example of a similar situation: Red-eye removal and rotating. Try making a red-eye correction, then rotating the picture sharply. The red-eye oval will stay in the same position, even though that moves it from where it was supposed to be. I guess graduated filters could behave similarly.
The adjustment brushes are probably the simplest: Since they're already amorphous shapes, they can "simply" be bent and distorted along with the corrections and still make as much sense afterwards. Except if you want to use them to correct lens errors, but I don't know how often you'd want to do that.
Perhaps distortion correction and pre-crop vignetting should belong together. They would certainly interact.
That's my $0.02 plus inflation.
-Lars

Perspective and lens geometrical corrections

Ideally Lightroom would encompass all the basic functions needed by the photographer in order to avoid, as much as possible, the use of Photoshop as part of usual workflow.
Perspective and lens geometrical aberrations corrections are two important steps of a photographer's workflow.
It would be great to have them as part of Lightroom. Don't you think?

The biggest disadvantage to edit in PS is, that you multipy the needed disc-space by a factor of about 3-10 by converting DNG or NEF into TIF/PSD and double up your files in LR with each file you´re editing in PS. For me, that´s one of the main-reasons to say, put as much as possibe features into LR. I´m willing to pay more money if LR is a modular system,or if you can choose between a "light" and a "extended" version.
Maybe LR light, and LR extended can be the future, instead of having two different products, 10 times loose of disk space, double number of database-entires is LR and to have a smarter work-flow.
But at least main features like lens corrections and perspective corrections should be included into LR.
Many greetings
EMSI68219

Correcting perspective in aperture 3

I have nymerous photos of buildings that need perspective correction. PTLens does not "open TIFF" files, and LensFix has no installation instructions. Any suggestions? Thanks

According to the PTLens website, it opens JPEG, 8 or 16 bit TIFF. If you use it as an Aperture edit plugin, only the TIFF setting is available from Aperture. Aperture doesn't have a JPEG setting in the Export Preferences section.

Want external widescreen not internal 4:3 - but perspective is stretched...

Hello,
I've just plugged in a new external widescreen, using the mini-VGA to VGA adaptor (btw, I know that spanning doesn't work - it only mirrors).
The external screen just loads up in the iMac's maximum resolution (1024x768) and is stretched. I want to make the perspective correct and I'm not sure how.
The only other settings in my displays are 800x600 and 640x480. I've just downloaded SwitchResX but I'm hesitant to simply make a new resolution.
Any suggestions?!?

We know that Apple has limited the Graphics cards in the iMac G4. There is a hack called "Screen Spanning Doctor" that will re-enable all the available resolutions and allow dual-screen mode but it only works for the 1GHz 15" iMac G4 (which is a GeForce 4 MX). Applying this hack may permanently damage your iMac and will invalidate any warranty left.
This hack won't work on the GeForce 2 MX machines like yours. Here are the developer specs for your display.
Personally I would advise sticking to XGA. This is the highest you can output.
mrtotes

Perspective correction

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